Airtac MGD Double Rod Mini Cylinder MGD20X250
The AirTAC Airtac MGD Double Rod Mini Cylinder MGD20X250 is a genuine double acting, double rod JIS-standard round-body mini air cylinder with a Ø20mm bore and 250mm stroke, 1/8" air ports and a SUS304 stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
- BoreØ20 mm
- Stroke250 mm
- Port size1/8"
- Acting typeDouble acting, double rod
- Rod threadM8×1.25
- CushionFixed anti-impact bumper pads
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac MGD Double Rod Mini Cylinder MGD20X250
The AirTAC MGD20X250 is a double acting, double rod JIS round-body mini cylinder with a 20 mm bore and 250 mm stroke. A piston rod exits both the front and back covers with an M8x1.25 male thread at each end, so the two rod ends move together and the output force is equal in both directions: about 131.9 N at 0.5 MPa and 184.7 N at 0.7 MPa, with a theoretical maximum of 26.9 kgf at 1.0 MPa. Because both sides of the piston see the rod-side area, there is no separate push and pull figure, and the through-rod resists rotation and side load while keeping stroke-end position repeatable.
Construction follows the JIS mini-cylinder footprint: a SUS304 stainless barrel with hard-chrome plated rods, riveted covers and a two-way lubricant-storing piston seal, suited to damp and washdown environments. Air supply is filtered to 40 um, operating pressure is 0.15-1.0 MPa (22-145 psi) with a 1.5 MPa (215 psi) proof pressure, temperature range is -20 to +70 C and speed is 30-800 mm/s. A fixed anti-impact bumper pad softens each stroke end, and the 1/8" port is the same on every MGD bore. This model carries no magnet, so no position sensor can be fitted; the optional S code enables CMSG, DMSG or EMSG switches.
Airtac MGD Double Rod Mini Cylinder MGD20X250 Technical Specifications
| Model | Airtac MGD Double Rod Mini Cylinder MGD20X250 |
|---|---|
| Series | MGD JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 250 mm |
| Acting type | Double acting, double rod |
| Port size | 1/8" |
| Rod thread | M8×1.25 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Fixed anti-impact bumper pads |
| Max standard stroke | Up to 300 mm |
Specifications follow the official AirTAC MG-series (JIS standard) datasheet. Barrel: SUS304 stainless steel (round-body, riveted construction); piston rod: carbon steel with 20µm hard-chrome plating. Thread options: PT (blank) / G / NPT.
Theoretical Output Force (Ø20mm)
| Pressure | Force (both ways) |
|---|---|
| 0.5 MPa | 132 N |
| 0.7 MPa | 185 N |
| Max (@1.0 MPa) | 27 kgf |
Double-rod: a rod exits both covers, so output force is equal in both directions (rod-side area used).
Model Code: Airtac MGD Double Rod Mini Cylinder MGD20X250
| MGD | JIS round-body mini cylinder (double-rod). |
|---|---|
| 20 | Bore size in mm. |
| ×250 | Stroke length in mm. |
| -S | Optional built-in magnet for CMSG / DMSG / EMSG sensors. |
| FA / LB | Mounting: FA flange, LB foot. |
MG-family variants: MG / MGC (double acting ±cushion), MSG / MTG (single acting push / pull), MGD / MGCD (double rod ±cushion). Accessories: LB foot, FA flange, plus I and Y knuckles. Thread PT (blank) / G / NPT.
Where the Airtac MGD Double Rod Mini Cylinder MGD20X250 Is Used
Anti-rotation slide feed
The through-rod at both covers resists rotation on a 250 mm linear slide, with 131.9 N available in each direction at 0.5 MPa for symmetric push-pull motion.
Twin-load push
Drive two small fixtures or eject two parts at once from the front and rear M8x1.25 rod ends, halving cycle count in compact 20 mm bore stations.
Rear stop or flag mount
Use the back rod end to carry a mechanical stop or position flag on a transfer line, with the fixed bumper pad decelerating each stroke end.
Is the Airtac MGD Double Rod Mini Cylinder MGD20X250 the Right Cylinder?
At 20 mm bore this is the smallest MGD, delivering 131.9 N each way at 0.5 MPa. A practical rule of thumb is to size for about 0.6 of the available force, so plan on roughly 80 N of usable thrust, or about 8 kg for a vertical lift at 0.5 MPa. If your load needs more, step up to MGD25 (206.1 N each way) or MGD32 (345.6 N); the largest in the series is MGD40 at 527.8 N. For a 50 or 63 mm bore, or for an adjustable air cushion instead of the fixed bumper, move to the MGCD series; for a single-rod cylinder, see the MG. The 250 mm stroke sits within the 300 mm maximum standard stroke for this bore. Choose LB foot or FA flange mounting plus I or Y rod knuckles (no SDB/CB pivot is offered on the double-rod body), and add the S code if you need CMSG/DMSG/EMSG sensing. On long strokes, guide the load externally so the through-rod is not asked to carry side load.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT / G / NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting (LB / FA) & knuckle
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Do not dismantle the riveted front/back covers.
- check On first run, back off the cushion/impact settings and release gradually.
- check Installation by qualified personnel per AirTAC docs.
Airtac MGD Double Rod Mini Cylinder MGD20X250 FAQ
Force is equal in both directions: 131.9 N at 0.5 MPa and 184.7 N at 0.7 MPa, with a theoretical maximum of 26.9 kgf at 1.0 MPa. Operating pressure is 0.15-1.0 MPa (22-145 psi), proof pressure is 1.5 MPa (215 psi), temperature range is -20 to +70 C, speed is 30-800 mm/s, and the port is 1/8". The maximum standard stroke for this 20 mm bore is 300 mm, so the 250 mm stroke is a standard length.
The MGD20X250 has a rod exiting both covers with the same M8x1.25 thread at each end, so force is identical extending and retracting, the through-rod resists rotation and side load, and the rear rod can carry a stop, flag or second load. The single-rod MG has a larger push than pull. This model has no magnet, so no sensor can be mounted; order the S code version to fit CMSG, DMSG or EMSG switches. Note the cylinder does not hold its load on air loss, so use an external rod lock or pilot check valve for a held load.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac MGD Double Rod Mini Cylinder MGD20X250
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.